Effect of SGLT2 Inhibitors on the Efficacy of First-Time Pulmonary Vein Isolation and Clinical Course of Patients with Heart Failure with Preserved Ejection Fraction and Atrial Fibrillation

Background/Objectives: SGLT2 inhibitors (SGLT2i) became a cornerstone of heart failure with preserved ejection fraction (HFpEF) pharmacotherapy in the recent years However, their actual influence on pulmonary veins isolation (PVI) efficacy in this population remains unclear. The aim of the study was to evaluate an impact of SGLT2i on one-year first-time PVI efficacy and clinical course of patients with HFpEF and atrial fibrillation (AF). Methods: This is a single-center retrospective study including 105 HFpEF and AF individuals, who underwent the first-time PVI (51 (48.6%) males; mean age at PVI: 65.2 ± 9.5 years). 53 patients treated with SGLT2i (hospitalized for PVI since 2023) and 52 patients without such a treatment (2020-mid-2023) were assessed according to the clinical presentation and hard endpoints. The primary endpoint was arrhythmia recurrence rate. The secondary endpoint was a composite of major adverse cardiovascular and cerebrovascular events (MACCE). Results: SGLT2i therapy was associated with greater symptom reduction after PVI (90.6% vs. 62.7%; p < 0.001). There was a statistical trend toward reduced all-cause mortality in SGLT2i (0% vs. 5.8%; p = 0.076). Although overall AF recurrence rates were similar between subgroups, Kaplan–Meier analysis showed a non-significant trend toward lower recurrence in the SGLT2i group (p = 0.096). The analysis did not reveal significant differences in terms of cardiovascular hospitalizations, stroke/transient ischemic attack (TIA) and MACCE incidence between the subgroups. Non-vitamin K antagonist oral anticoagulants (NOACs) administration was associated with a lower risk of AF recurrence (OR 0.27; 95% CI 0.096 to 0.77; p = 0.014). MACCE occurrence was predicted by higher CHA2DS2-VA (Congestive heart failure, Hypertension, Age ≥ 75, Diabetes, Stroke, Vascular disease, Age 65–74) (OR 5.63; 95% CI 1.57–20.12; p = 0.008), lower left ventricular ejection fraction (LVEF) (OR 0.74; 95% CI 0.57–0.99; p = 0.028) and (vitamin K antagonists) VKA use (OR 97.44; 95% CI 3.2–2962.57; p = 0.009). Conclusions: SGLT2i pharmacotherapy in the study population was linked to higher efficacy in symptom reduction, with a probability of AF recurrence and all-cause mortality reduction, which may suggest a potential beneficial role of SGLT2i in this cohort.